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Old 07-12-09, 11:00 PM   #1
peripatetic
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recommend a tap/die set

I've been looking online, but can't find many small sets w/ metric parts that'd cover basic bike work. Anyone have any recs on where to look? It seems from reading Sheldon Brown I want a tapered set.

Unfortunately, most things I come upon look like they're SAE--I am correct in assuming that threading for standard bike parts (aside from things such as bb and maybe hubs)--bolts and boltholes--are going to be metric threading?

Thanks.
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Old 07-13-09, 06:44 AM   #2
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Bike threading is mostly metric but the thread pitches can be uncommon. For example, crank clamp bolts on square taper spindles are threaded M8x1.0 instead of the more common M8x1.25 and rear derailleur hangars are threaded M10x1.0 instead of the common M10x1.5. About the only common thread sizes used are M5x.8 mm and M6x1.0. Hub axles are also non-standard Metric threads (M10x1 mm and M9x1 mm) but, these need dies, not taps.

Generally you won't find these thread pitches in the usual tap and die sets unless they are very complete, and therefore expensive.

Bike Tools Etc. does offer a tap and die set with bike specific threads for $65 and that sound like your best bet. Look here:

http://www.biketoolsetc.com/index.cg...item_id=VA-TDS

And, of course, English bottom brackets, pedals and threaded steerers use uncommon SAE/English threading which is another story entirely.
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Old 07-13-09, 10:12 AM   #3
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Thanks. On further contemplation, I think I'm just going to go with purchasing individual taps/dies as I need them. This tap set looks decent. I realized I'm more likely to need taps than dies at this point, anyway.
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Old 07-13-09, 10:23 AM   #4
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Originally Posted by peripatetic View Post
Thanks. On further contemplation, I think I'm just going to go with purchasing individual taps/dies as I need them. This tap set looks decent. I realized I'm more likely to need taps than dies at this point, anyway.
That one is pretty good too. The 1/2"x20 taps are not going to be useful unless you work on children's or very cheap adult bikes with Ashtabula cranks and the M3x.5 tap is only useful on the fairly rare horizontal dropouts that are threaded for adjuster screws. The rest of the set is well chosen.
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Old 07-13-09, 11:23 AM   #5
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My only addition to the excellent replies so far- buy good quality taps and dies, stay away from the cheap China and especially India.
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